What chemical element is Br?Element Symbols:All elements have a symbol that involves two letters. In most cases, this will be the first two letters of the element name. Elements are substances made from a single type of atom.Answer and Explanation: ...
What chemical element is Ge? Elements and Symbols: Chemical elements are substances made from a single type of atom. They are designated by a two-letter symbol in which the first letter is always capitalized while the second letter is lower-case. Often, the symbol is similar to the name, ...
What chemical element is Br? What is the name of the molecule shown? What is the chemical activity of a substance? What does chemical compound mean? What is the name of the compound with the formula Al(NO2)3 ? What is the name of the compound with the formula NahCo3 ?
The chemical element with atomic number 1 is hydrogen. What is the abbreviation for hydrogen? A. Hy B. H C. Hd D. Hg 相关知识点: 试题来源: 解析 B。氢元素的英文是 hydrogen,其缩写形式是 H。选项 A“Hy”不是氢元素的正确缩写;选项 C“Hd”一般不是任何化学元素的缩写;选项 D“Hg”是汞...
In 2014, Prof Billy Hudson of Vanderbilt University School of Medicine and his team of researchers added bromine as the 28th chemical element to the list.[1] Their study, published in the journal Cell, revealed that bromine is essential for tissue development in all animals, from primitive sea...
The chemical element with atomic number 20 is calcium. What is the abbreviation for calcium? A. Ca B. Cy C. Cg D. Ch 相关知识点: 试题来源: 解析 A。钙元素的英文是 calcium,其缩写形式是 Ca。选项 B“Cy”不是钙元素的缩写;选项 C“Cg”一般不是任何化学元素的缩写;选项 D“Ch”一般不是...
Book Review: What is a chemical element? The opening words of the Introduction - "What is a chemical element?" - restates the book's apparently simple title. Rather more helpful is the title of Ch... E Scerri,E Ghibaudi - 《Chemistry in New Zealand》 被引量: 0发表: 2021年 What ...
The chemical element with atomic number 11 is sodium. What is the abbreviation for sodium? A. Sa B. Sn C. So D. Na 相关知识点: 试题来源: 解析 D。钠元素的英文是 sodium,其缩写形式是 Na。选项 A“Sa”不是钠元素的正确缩写;选项 B“Sn”是锡元素的缩写;选项 C“So”不是钠元素的缩写。
The identity of a chemical element cannot be changed by any chemical reaction. However, a nuclear reaction can transmute one element into another one. Elements are considered to be the building blocks of matter. This is true, but it's worth noting atoms of an element consist of subatomic par...
The chemical element with atomic number 14 is silicon. What is the abbreviation for silicon? A. Si B. Sy C. Sg D. Sn 相关知识点: 试题来源: 解析 A。硅元素的英文是 silicon,其缩写形式是 Si。选项 B“Sy”不是硅元素的缩写;选项 C“Sg”一般不是任何化学元素的缩写;选项 D“Sn”是锡元素...